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From Chris Burroughs <chris.burrou...@gmail.com>
Subject Re: BloomFilterFalsePositives equals 1.0
Date Wed, 22 Jun 2011 22:04:56 GMT
To be precise, you made n requests for non-existent keys, got n negative
responses, and BloomFilterFalsePositives also went up by n?

On 06/21/2011 11:06 PM, Preston Chang wrote:
> Hi,all:
>      I have a problem with bloom filter. When made a test which tried to get
> some nonexistent keys, it seemed that the bloom filter does not work. The
> 'BloomFilterFalseRatio' was 1.0 and the 'BloomFilterFalsePositives' was
> rising and the disk I/O utils reached 100% according to 'iostat'.
> 
>     I found the patch in
> https://issues.apache.org/jira/browse/CASSANDRA-2637 , but in my cluster key
> cache had been enabled already.  My Cassandra version is 0.7.3. There are 3
> nodes and RF is 3.
> 
>     Thanks for your help.
> 


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